Great Sun Electronics is responsible for assembling many types of smartphones for different manufacturers. As part of an efficiency effort, it wants to improve training of new hires in the assembly process. Great Sun Electronics came up with two different training programs. Each training program tested $25$ new employees for $10$ days. The number of errors in assembly for the first training program is given below.

Day

$1$

$2$

$3$

$4$

$5$

$6$

$7$

$8$

$9$

$10$

Errors for Program $1$

$0$

$1$

$3$

$2$

$4$

$2$

$3$

$1$

$6$

$4$

How many days, if any, were out of control?

Question $3$ options:

a$)$

$0$

b$)$

$2$

c$)$

$4$

d$)$

$6$